( | 632 | + | a | ) | ÷ | ( | 236 | − | a | ) | = | 3 |
Multiply both sides of the equation by: | ( | 236 | − | a | ) |
( | 632 | + | a | ) | = | 3 | ( | 236 | − | a | ) |
632 | + | a | = | 3 | ( | 236 | − | a | ) |
632 | + | a | = | 3 | × | 236 | − | 3 | a |
632 | + | a | = | 708 | − | 3 | a |
a | + | 3 | a | = | 708 | − | 632 |
4 | a | = | 708 | − | 632 |
4 | a | = | 76 |
a | = | 76 | ÷ | 4 |
= | 76 | × | 1 4 |
= | 19 | × | 1 |
a | = | 19 |